C1514

POWER STEERING: POWER STEERING SYSTEM: C1511: Torque Sensor Circuit Malfunction

DTC C1511 - Torque Sensor Circuit Malfunction

DTC C1512 - Torque Sensor Circuit Malfunction

DTC C1513 - Torque Sensor Circuit Malfunction

DTC C1514 - Torque Sensor Power Supply Abnormal

DTC C1517 - Torque Hold Abnormal

DESCRIPTION

The torque sensor converts the rotation torque input from the steering wheel into electric signals and sends them to the power steering ECU.






WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: If the steering column or power steering ECU has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration .

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION (TORQUE SENSOR - ECU)
(a) Check the installation condition of the torque sensor connector.
OK:
Torque sensor connector is securely connected to the power steering ECU.
NG -- CONNECT CONNECTOR
OK -- Continue to next step.
2. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (TORQUE SENSOR1, TORQUE SENSOR2)
(a) Turn the ignition switch to OFF.
(b) Connect an intelligent tester or Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the intelligent tester or Techstream on.
(e) Enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / CHASSIS / EMPS / DATA LIST /
(2) Techstream - Select: Chassis / EMPS / Data List /
(f) Select the items "Torque Sensor 1 Output" and "Torque Sensor 2 Output" in the Data List and read the value displayed on the intelligent tester or Techstream.
(1) Intelligent tester

EMPS:





(2) Techstream

EMPS:





OK:
Normal condition value is displayed on the intelligent tester or Techstream during each steering operation.
NG -- INSPECT POWER STEERING ECU (TRQV VOLTAGE)
OK -- REPLACE POWER STEERING ECU
3. INSPECT POWER STEERING ECU (TRQV VOLTAGE)
(a) Turn the ignition switch to ON.





(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPLACE POWER STEERING ECU
OK -- Continue to next step.
4. INSPECT POWER STEERING ECU (TRQ1, TRQ2 VOLTAGE)





(a) Turn the ignition switch to ON.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPLACE STEERING COLUMN
OK -- REPLACE POWER STEERING ECU